SYSINFO(3)SYSINFO(3)NAME
SYSINFO - GNU interface for gathering system information
SYNOPSIS
#include <sys/sysinfo.h>
int sysinfo(struct sysinfo *info);
DESCRIPTION
The sysinfo() function returns common information about the configura‐
tion and state of the system:
struct sysinfo {
long uptime; /* Seconds since boot */
unsigned long loads[3]; /* 1, 5, and 15 minute load averages */
unsigned long totalram; /* Total usable main memory size */
unsigned long freeram; /* Available memory size */
unsigned long sharedram; /* Amount of shared memory */
unsigned long bufferram; /* Memory used by buffers */
unsigned long totalswap; /* Total swap space size */
unsigned long freeswap; /* swap space still available */
unsigned short procs; /* Number of current processes */
unsigned short pad; /* leaving this for linux compatibility */
unsigned long totalhigh; /* Total high memory size */
unsigned long freehigh; /* Available high memory size */
unsigned int mem_unit; /* Memory unit size in bytes */
/* leaving this for linux compatibility */
char _f[20-2*sizeof(long)-sizeof(int)];
};
sysinfo() is a high-level GNU interface for retrieving information oth‐
erwise provided by sysconf(3) and sysctl(3).
RETURNS
0 on success, -1 if full data cannot be collected.
SEE ALSOsysconf(3), sysctl(3)STANDARDSsysinfo() is not portable, and is provided mainly as a bridge for port‐
ing GNU programs.
AUTHOR
Kostas Petrikas
SYSINFO(3)
